CHG International Limited
Your Trusted Partner in the Metal Surface Treatment Industry
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This automatic powder coating production line is suitable for metal parts of various sizes and shapes. The material of the spray booth is PVC, and the spraying method combines automatic gun spraying and additional manual coating, and the production line adopts the power & free overhead system, and the parts are loaded and unloaded manually.
All of our powder coating production lines are designed according to client's products and demands. A more accurate quotation needs to be calculated according to the parameters of the coating production lines you need. Please contact us and a detailed specification for the discussion will be very much appreciated.
The Process of Powder Coating Line:
| 1. Surface Preparation: | The initial stage of the powder coating process involves surface preparation, which is critical for ensuring optimal adhesion of the powder coating to the aluminum profiles. This step includes cleaning, degreasing, and removing any contaminants from the surfaces to be coated, creating a pristine base for subsequent treatments. |
| 2. Pre-Treatment: | After surface preparation, the aluminum profiles undergo a pre-treatment process to enhance coating adhesion and corrosion resistance. Common pre-treatment methods include chemical cleaning, phosphating, or chromate conversion coating. The pre-treatment prepares the aluminum surface for better powder adhesion and improves coating performance. |
| 3. Drying: | Once the pre-treatment is completed, the aluminum profiles are passed through drying ovens to remove any remaining moisture from the surface. Dry aluminum surfaces are crucial for proper powder coating adhesion and finish. |
| 4. Powder Coating Application: | The dried aluminum profiles are then ready for powder coating application. The powder coating material is electrostatically charged and sprayed onto the aluminum profiles using powder coating guns. The positively charged powder particles are attracted to the grounded aluminum profiles, adhering to the surface uniformly. |
| 5. Powder Curing: | After powder coating application, the aluminum profiles are transferred to curing ovens. In the curing ovens, the powder coating undergoes a thermal curing process. The oven's heat causes the powder particles to melt and flow, creating a continuous, smooth coating film. The curing process also chemically cross-links the powder particles, ensuring a durable and hardened finish. |
| 6. Cooling: | Following the curing process, the coated aluminum profiles enter a cooling phase. This allows the coating to stabilize and ensures that it retains its properties and appearance over time. |
| 7. Quality Inspection: | The final step in the process is a thorough quality inspection. Technicians carefully check the coating thickness, appearance, adhesion, and overall quality to ensure compliance with specified standards. This rigorous inspection guarantees that each coated profile meets the highest quality criteria before it leaves the production line. |
